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Well, I don't want to make big proclaims, but there is a very good possibility that I solved the issue. Today, after work, I did some more test. A 25 minutes run with the GT86, a car that never presented any problem before. And, after 25 minutes of gameplay, the RAM usage of the game was around 400 mb. No problems whatsoever. Then I did a second test. I rebooted the game, and switched to the Skyline R32. The first 10 minutes of gameplay went on smooth, with the RAM usage around 300-400 mb. But then, suddenly, the game started eating RAM. 100 mb every 2 minutes, till it reached around 1 GB of total usage at the 25 minutes mark. And then the FPS tanked. Just like yesterday. The GPu went to 99% of total usage to 20%. Then my brain started to working. What if the executable can't use more than 1 GB of RAM? That would explain the drop, since the lock on RAM usage would bottleneck the GPU, getting it to perform only 20% of its power. So I used the legendary (in the rFactor community, at leat) "4 GB Patch". A patch that modify any executable to work without RAM restrictions. And it worked. The patch did not comprimised the executable, and I was able to play for an hour straight with my R32, even surpassing that 1 GB mark, and then switching to the AE86 Trueno. No problems, no FPS drops, no nothing. And the game even start being less "hungry" for RAM when it surpass the 1 GB mark, assesting itself around 1.2/1.4 GB of total RAM usage. Someone should give me a little medal for all this testing... About the "4 GB Patch", you should be able to find it youself on the net. If not, I ask permission to an administrator to post it in this thread, since it could be usefull to more people, and would increment the amount of testing on it, to see if it actually work flawlessly, or my 1 hr run without problems was just dumb luck.

Hopefully this patch will help with maintaining game stability. 1gb RAM limit is a serious bottleneck with all mods installed (even without considering fairly optimized cars). I remember not using HDU patch in the past because of crashes - might be linked to this issue ?! Thanks to @Mondodimotori for the time spent on investigation and solution And of course thanks @Milli for bringing new fellows down here !!

Just buy the car or test drive it and you'll see that everything is just fine. It's a thing of some dealerships to display the colors in a different shade of their real appearance.

I will be adding wiki style guide in Wiki, then everyone can participate editing it, so people don't have to keep repeating same answers I will give you a shoutout once done, not much but I can give you VIP as reward if you can help editing and promoting within the site we are also getting lot of questions in discord, it will help to give them a direction

Dude! That's why we need smart people on the forums! I mean, i knew that some cars caused that glitch, and that is a problem of a not very well optimized mod, usually a mistake made by the modder of the car. But i never knew how to fix, other than using another model or car. What you found is not a solution, but it will do, untill we don't get new mods to replace the "ram hungry" ones. Thank you very much. And you can feel free to post a new thread in the TDU modding section about it though.

v1.04 of the update is out. And @Mondodimotori made to the OP. Thanks again.

Jesus christ, thank you so much dude, this patch worked for me too I was so confused about that huge FPS drops/crashes, finally this issue was gone. https://ntcore.com/files/4gb_patch.zip - if someone also have the same issue, use this link

I have uploaded it for you.

The game has a dedicated key to start the car. In the option menu it should be called "play" or "start". Basically, you always need to manually start the car when entering free roam or an event. Go find the option and bind it to a key different from "accelerate". This isn't even a mod related problem, maybe we should keep this thread to just related stuff and problems. And I'm a newby too, I shouldn't be telling you this.

Hello mitkop81, Happy Birthday to you I hope also, that StarGT will be back, fingers cross.